So I guess Winchester is on the match bandwagon with a non-magnum "Match" primer at or below the GM205M/210M price point and 2/3 the price of BR2/BR4 from CCI.
I missed this post until now when I did a search after seeing the darn things at Natchez! I tried the Winchester website looking for more information but found nothing. I sent a note to Winchester customer support asking a boat load of questions but haven't heard back yet. When I get more information I'll gladly post it here. I did notice that there were no reviews posted at Natchez for the large rifle primers.